(24021) Yocum Main-belt Asteroid
Discovered on 9 September 1999 by LINEAR at Socorro.
Ivan Yocum mentored a finalist in the 2007 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition. He teaches at the Doolen Middle School, Tucson, Arizona.Naming citation (20071026/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Yocum is today
Seen from above the solar system on 2026-10-14: Yocum is 2.64 au from the Sun and 3.60 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 24021 |
| Provisional designation | 1999 RT143 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.31 km (#16,588 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.332 |
| Rotation period | 109 hours |
| Absolute magnitude (H) | 15.38 |
| Orbital period | 3.61 years |
| Semi-major axis | 2.35 au |
| Perihelion – aphelion | 2.06 – 2.65 au |
| Eccentricity | 0.125 |
| Inclination | 6.51° |
| Closest distance between its orbit and Earth's (MOID) | 1.06 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Ivan
- (5361) Goncharov
- (8244) Mikolaichuk
- (8609) Shuvalov
- (9732) Juchnovski
- (9932) Kopylov
- (11003) Andronov
- (11191) Paskvic
- (12513) Niven
- (17002) Kouzel
- (20045) Semeniuk
- (20654) Ivaneder
- (20658) Bushmarinov
All asteroids named after someone called Ivan
Also discovered on 9 September 1999
- (12127) Mamiya
- (12130) Mousa
- (12589) Davidanand
- (12590) Ballantine
- (12591) Bergey
- (12592) Brianchen
- (12593) Shashlov
- (12594) Sidorclare
- (12595) Amandashaw
- (12596) Shukla
- (12597) Williamdaniel
- (12598) Sierra